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2021-11-15 GC Agenda - Item 7 - Attachment 2 - Coastal Hazards Adaptation Plan with tracked changes
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Log in to see the plans as drawnseasons2. Most beaches in Noosa are ‘dynamically stable’ and have benefited from long periods of sand accretion in recent decades (largely due to the general absence of major storm activity as compared to historical erosion events of the 1970s). Noosa Main Beach and Dog Beach are notable exceptions experiencing more regular erosion. The open beaches are shaped and maintained by coastal processes of erosion and accretion, as well as longshore drift which transports sediments northward along Australia’s east coast3. The supply of sand needed to keep the beach at a ‘healthy’ state is reliant on longshore drift processes which is influenced by prevailing winds, swells, and sediment supply, mostly driven from the south east. 2 Thom, B.G. and Hall, W. (1991). OZCOASTSBehaviour of beach profiles during accretion and erosion dominated periods. Earth Surface Processes and Landforms. 16:113-127. For more information, see ozcoasts.org.au 3 BMT WBM (2013),). Sunshine Coast Regional Council: Coastal Processes Study Noosa Council – Coastal Hazards Adaptation Plan Page 14
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